<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script>
			var now=new Date();
			now.setMinutes(now.getMinutes()+3);
			
			document.cookie="username=zhangsan";
			document.cookie="password=123456";
			document.cookie="age=18";
		</script>
	</body>
</html>
